Calculator



FIG. 1 is a top, front and right side perspective view of a calculator showing my new design, with the stand in an open position;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view, with the stand in closed position;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof. 

The ornamental design for a calculator, as shown and described. 